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CVE-2026-43063 (GCVE-0-2026-43063)

Vulnerability from cvelistv5 – Published: 2026-05-05 15:23 – Updated: 2026-08-05 12:25
VLAI
Title
xfs: don't irele after failing to iget in xfs_attri_recover_work
Summary
In the Linux kernel, the following vulnerability has been resolved: xfs: don't irele after failing to iget in xfs_attri_recover_work xlog_recovery_iget* never set @ip to a valid pointer if they return an error, so this irele will walk off a dangling pointer. Fix that.
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: ae673f534a30976ce5e709c4535a59c12b786ef3 , < b5c5a50c2f513d4a13a6763564a07b470e69cc5a (git)
Affected: ae673f534a30976ce5e709c4535a59c12b786ef3 , < a1a5df1038f0b3c560d204270373621a4e622808 (git)
Affected: ae673f534a30976ce5e709c4535a59c12b786ef3 , < 40082d08b638485cbaa543dc8087a3d1844d6f08 (git)
Affected: ae673f534a30976ce5e709c4535a59c12b786ef3 , < 70685c291ef82269180758130394ecdc4496b52c (git)
guessed Create a notification for this product.
Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.12.80 , ≤ 6.12.* (semver)
Unaffected: 6.18.21 , ≤ 6.18.* (semver)
Unaffected: 6.19.11 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website

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              "value": "AV:L - Vulnerable code is reached during local XFS filesystem mount/log recovery from a block device or filesystem image, not through network input. A crafted XFS image or dirty log is the plausible attack vehicle.\nAC:L - No race or hard-to-control timing is required; a crafted recoverable XFS log item that makes inode lookup fail deterministically reaches the bad `xfs_irele` path. The needed log state is attacker-controlled in the malicious filesystem image.\nPR:N - The direct mount path requires `CAP_SYS_ADMIN` because XFS is not `FS_USERNS_MOUNT`, but an attacker can supply a malicious filesystem image for a privileged user or automounter to mount. In that highest reasonable scenario, the attacker needs no privileges on the target.\nUI:R - Exploitation requires the crafted XFS filesystem to be mounted or recovered by a user, administrator, or mounting service. No further user action is needed once recovery starts.\nS:U - The vulnerability corrupts kernel state within the same operating-system security authority. It is not a VM escape or other cross-scope boundary violation.\nC:H - The bug releases an uninitialized or dangling inode pointer during recovery, which is kernel memory corruption/use-after-free class behavior. Following the higher-severity rule, this is treated as potentially enabling kernel memory disclosure.\nI:H - The invalid inode release can corrupt kernel object lifetime/refcounts and may be exploitable beyond a simple crash. Following the higher-severity rule for dangling pointer memory corruption, integrity impact is High.\nA:H - At minimum, calling `xfs_irele` on an invalid or dangling pointer can crash or BUG the kernel during mount recovery. This gives high availability impact."
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      "title": "kernel: xfs: don\u0027t irele after failing to iget in xfs_attri_recover_work",
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      "id": "CVE-2026-43063",
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      "product_status:recommended": "172",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-43063",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-43063.json",
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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